Math Is Fun Forum
Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °
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#1 2013-08-05 07:40:23
- atran
- Member
- Registered: 2013-07-12
- Posts: 91
Inequality Question
Hi;
Why: if x1≤y1, x2≤y2, ..., xn≤yn THEN x1+x2+...+xn≤y1+y2+...+yn
Thanks...
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#2 2013-08-05 07:45:12
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Inequality Question
If I remember correctly, one of the axioms concerning the equal or less relation was:
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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